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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-05-16 12:42:20 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-05-27 10:51:06 +0200
commit9a51c6b1f9e0239a9435db036b212498a2a3b75c (patch)
tree26199d404c30f7f1f558570a31ed1e0543b41bcb /drivers/pci
parentcd6c84d8f0cdc911df435bb075ba22ce3c605b07 (diff)
downloadlinux-9a51c6b1f9e0239a9435db036b212498a2a3b75c.tar.bz2
ACPI/PCI: PM: Add missing wakeup.flags.valid checks
Both acpi_pci_need_resume() and acpi_dev_needs_resume() check if the current ACPI wakeup configuration of the device matches what is expected as far as system wakeup from sleep states is concerned, as reflected by the device_may_wakeup() return value for the device. However, they only should do that if wakeup.flags.valid is set for the device's ACPI companion, because otherwise the wakeup.prepare_count value for it is meaningless. Add the missing wakeup.flags.valid checks to these functions. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci-acpi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index c5e1a097d7e3..1897847ceb0c 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -733,7 +733,8 @@ static bool acpi_pci_need_resume(struct pci_dev *dev)
if (!adev || !acpi_device_power_manageable(adev))
return false;
- if (device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count)
+ if (adev->wakeup.flags.valid &&
+ device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count)
return true;
if (acpi_target_system_state() == ACPI_STATE_S0)